The formula Mg3A2 is missing the nonmetal which has been labeled as mystery element "A" a) Which group of the periodic table must the mystery element "A" belong to?
b) What is the mystery elements charge (sign and number)?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely